I generally stick with Vallejo these days, they have quite a few metallics in their lineup. There's also a group of 4 rust pigments too that'll cover all your needs.
Radone tan is the interior color your looking for, but generally the inside of the hatch would be oversprayed with the camo colors so they didn't stick out when open.
You can prime in red oxide and cover, or prime and basecoat and add red oxide chipping after.